Fresh from her Wells Fargo ‘victory’, an emboldened Senator Elizabath Warren is taking aim at SEC Chief Mary Jo White. As WSJ reports, Warren’s ongoing efforts to block administration nominees seen as too close to big business have led her to demand President Obama fire White for her decision not to craft a rule requiring public companies to disclose their political spending activities.

Tensions between Ms. Warren and Ms. White erupted at a June Senate hearing, where the Massachusetts lawmaker said she was “more disappointed than ever” in the regulator’s tenure.